Junction box



April 14, 1925. 153397529 A H. F. RICHARDSON ET AL 'JUNCTION Box Filed July l2, i924 I l lNVEwTOR -Wzdd --f wm MMU, /M BY MW un in.

ritenne n. meenemen,

vri-Jen, NEW wenn,

OIE BROOKLYN, AND ALLAN COGGESHALL, OF PLEASANT- -SSGNORS F UNE-FOURTH T0 HENRY F. RICHARDSON, OF BIELGKLYN, NEXV YORK; ONE-EGURTH TO ALLAN COGGESHALL, OF PLEASANT-- VELLE, NEW 'EQMEQ ONE-SXXTH TO' S. R. BRADLEY, 0F NYACK, NEW YORK; ONE- T A. DRANGEEURG, 'NEWT YORK.

` rtf-Nomen Box. ,5

Application. ie July 152,

To UZZ iti/710m t may concern:

e it known that we, 'Hi-:Nur F. Bronnensorr und ALLAN UOGGESHALL, citizens ot' the llnii'ed States. und residents. respectively, ot' the borough ot lfroolclyn, city of New York, Hinge County, sind State of New York, and ltleusentvillc, `iiestchestei County, Stute of New York, have invented certain new und use'iul improvements in Junction Boxes, of which the following is n. specification.

@ur invent-ion relates to u system of inte rior electric wir@J conduits where, for exnnn ple, the conduits ure luid broadcast under the licor, with junction boxes et their inten sections and service fittings inserted subsequent to the laying of the floor et suclrpluces :is may from time to time be indicated. Such conduits are', in general, leid on suit- `able supportsduringthe construction of the floor as, for exemple, on u lsub-base of the door, and then covered with u surf-nce ioor. x@ver the ldoor thus ornned it is ott/en desired to lay u floor covering of linoleum. rubber tiie, Wood or the like.

rhe problem' of making u. junction bon or floor outlet bor; 'lor the conduit und liningI 'it up neutly with. the surface of the lioor is then. confronted.

lin the accompanying drawings:

YFigure 'i is :i pien view ot u junction box.

Figure is n section, of 4the junction bor; tuhcn on line .---2 oiY Figure 1.

.lfigrure 2 is :i detail on larger seule of the udjusting screw shown in Figure 2.

ltei'ei'ring to Figures i und 2, l. represents 'foiuuhition floor which muy, tor exemple, be the usuel concrete elub that entends be tween columns and forms the inuin 'flooroi tno. iniilding. Such mein. floor slabs form nur/t ot' the renin construction of the buildin und upon them is customary to luy n. suierliciul .door und it is also e, general prec Vlice to lay this superficiel floor upon an intermediate iillinfr ot cinders or' the like. The 1u nerticinl lion, shown :it 2 end the einder ruling; et i reviens to leyinf 'the superA heini door und. filling, our practice is to luy upon the seid vdoor or slab e system of electric wire conduits extending grid-iron like over all the iioor eurluce so that ull. pui-ts of 195%. Serial No. 725,667.

the floor will be within a minimum distance ot' soule brunch of the conduit. Such conduits4 we prefer to muke'of the shape shown 1n Figures 3, 4 und .3, nt 4, namely, of u semiczrculnr cross-section with the open side down so ns to forni :in nrclrlile Conduit well udupted for withstanding the brought to beur upon it by loading of the floor und at the suine time not to encroach too much upon the smell available height. At intersections :i junction box, suoli fis shown in Figures l and' 2, may be used. This junction box consists of e body portion 5. which Inny or may not have e. bottom 6. rll`he gunction box is provided with suitable openings 7 flanged to hip over the ends oi the conduits entering therein. The junction. box. has :i hole, preferably circuler, in its upper part, and into this hole extends the lip 8 of e curbing 9. This curbing hes another flange 10 which extends up to the top of the surface floor and the lenge 'l0 land lip 8 `are connected by a horizontal shelf portion 11 adapted to form a seat for e supplemental or inner rim 12. In the supplemental orinner rim 12, e cover 13 is accurately ittcd The supplemental or inner rim strains' 12 may be secured to the curb 9, for enumH ple, by screws 1li, lund the cover i3 muy be secured to the curb 9 or to the 4',iupplenientul nini l2 by screws l5. 'it is souietimes desired to luy over the concrete floor Surface si covering o'l linoleuzn, rubber tile, wood or the like 1G. To ineke everything flush with the floor, itis only necessary in such case to interpose zi washer i7 between the curb und the supplemented rim ot the suine material, that is if the door covering is, for example, linoleum; a. Washer or gasket of the same linoleum is placed `be tween the curb and the supplemental rim und the supplemental rim. will thereby be brought up to Suche. height that its upper edge will be exuctlv flush with the iioor covering, preventing the letter from having its 'edge abruded. Also, n piece of the saine with the respective levels, it is necessary to provide an adjustment for the curb 9 and this we accomplish by means of adjusting screws 20, shown in detail in Figure 2. These adjusting screws are screwed into the body 5 ofthe fitting and at their upper ends have a supporting collar 2l, upon which the curb 9 rests. A conical extension 22 on the upper end of the screiv serves to center the curb in position and the screws are prevented from becoming separated from the curb by having the upper end expanded as at 23 so that while the screw can be turned freely in the curb, it. cannot be removed. lith the aid of' these screws the curb may be adjusted to any elevation and also leveled, there heilig three of them provided for this purpose, as shown in Figure l. The curb 9 has the important function of providing a fiush edge or curb that the mason can Without difficulty sweep over with his leveler in laying the finished surface.

The provision of an inner or supplemental rim within the curb that holds the edge of the concrete floor which supplemental Vrim may either remain flush with the outer rim or curb or be made to project above it to the exact height necessary to bring it flush with a subsequently apphed floor covering, ohviatcs the troublesome difliculty heretofore experienced by the masons of having to level around a curb or fitting that has to be left projecting a small distance above the original floor so as to form a flush edge of a surface Hoor covering planned to be laid subsequently. On the other hand if to eliminate the above objection the fitting `is set with its curb flush with the cement floor then when the floor covering is finally laid t-he cover of the fitting-has to be raised by blocking up in some Way until it is flush with the floor covering. This leaves no curb protecting the edge of' the floor covering.

With the system of double. curbs described herein, one fixed for the masons to work to,

and one movable to adjust to any height required, no trouble is niet from the masons standpoint, and no consideration need be had as to the thickness of the floor covering and again if changes in floor covering should Subsequently be made requiring a greater or lesser height the necessary adjustment may be easily made.

Vile claim 1. Air outlet box comprising a main portion, an outer curb with a substantially horizontal shoulder betvveenits ends, an inner curb mounted on and fitting Within said outer curb, means to fasten said ,inner curb so that it rests directly'V on the shoulder or is spaced therefrom a distance to bring its upper end to a desired position above the upper end of the inner curb, and a. cover fitting Within said inner curb and flush With the top thereof.

2. An outlet box comprisingfa main portion, an outer curb with a substantially horizontalshoulder between its ends, an inner` curb mounted on and fitting Within said outer curb, and means to fasten said inner curb so that it rests directly on the ,shoulder or is spaced therefrom a distance to bring its upper end to a desired position above the upper end of the inner curb, the outside height of the inner curb being equal to the inside height of the outer curb.

3. An outlet box` comprising a main porl tion, an outer curb with a substantially horizontal shoulder between its ends, an innerycurb mounted on and fitting Within said outer curb, means to fasten said inner curb so that it rests directly on the shoulder or is spaced therefrom a distance to bring its upper end to a desired position above the upper end of the inner curb, and means for adjusting the outer curb vertically on the main portion.

HENRY F. RICHARDSON, ALLAN COGGESHALL. 

